For now I didn't saw any post/thread about this except jolla store. It not so convenient and you not always get answers by this way.
Hope author (hhaveri) will come here and help/answer to us, also help of users are welcome.

@hhaveri, I noticed that an already known (paired) Bluetooth device does not trigger any situations. I can't even find a device if it is already paired. Still with the latest version.
On a SGS3, this function works.

Thanks for posting a direct link! By the way, this way we could easily have a version that 'autostarts'...